Sta s cs - Hypothesis Tes ng 2 SETS COMBINED WITH
COMPLETE SOLUTION RATED A+ 2025/2026
The variable "age of children" is a(n) ________ level variable. interval-ra o
A researcher is studying the American labor force. Use the following Bureau of Labor Sta s cs
data to calculate the percentage of the popula on that was employed in 2002. Total U.S. civilian
popula on aged 16 and older: 217,570; total employed: 136,485 (all figures are in thousands).
100 * (136,485) / (217,570) = 62.7
For interval-ra o data, the correct measure of central tendency is the ________. mean
Z scores can be computed for only ________ type of data. interval-ra o
What percent of the sample lies within one standard devia on of the mean? 68.26%
The popula on distribu on is ________. empirical
Common alpha levels are ________. .01, .05, .10
To find the confidence interval for popula on means, we must have the ________. sample
mean and standard devia on
The main point in one-sample hypothesis tes ng is to determine ________. if the sample
is taken from the popula on
, The equa on for degrees of freedom for two-sample hypothesis tests is __________. N1 +
N2 -2
The test sta s c computed in ANOVA is the ________. F ra o
Degrees of freedom are found with which of the following formulas? (number of rows - 1)
(number of columns - 1)
X is used to iden fy the ________ variable. independent
The independent variable is designated with ________ symbol. X
The symbol ________ is used to designate lambda. λ
Gamma is an appropriate measure for ________ level of measurement variables. ordinal
Bivariate means ________. two variables
In order to determine if an associa on exists, the logical first step would be to ________.
find the percentages
Percentages are calculated in the direc on of the ________ variable. independent
When crea ng a bivariate table, the ________ variable should be placed along the top of the
table, and the ________ variable should be placed along the side of the table independent,
dependent